rini:speed_log_notes
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rini:speed_log_notes [2009/04/17 06:49] ben |
rini:speed_log_notes [2011/04/11 09:00] ben [Notes dumping place for possible Arduino speed-log] |
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| ====== Notes dumping place for possible Arduino speed-log ====== | ====== Notes dumping place for possible Arduino speed-log ====== | ||
| - | == ALL DEPENDS on proven functionality of the speed transducer- first things first, remove transducer and test... == | + | |
| + | <del>ALL DEPENDS on proven functionality of the speed transducer- first things first, remove transducer and test...</del> | ||
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| + | **Update 04/11/2011**: The speed log transducer was removed from the boat, drilled out, and a new reed switch wired and seated, and the whole unit was then re-potted and placed back in the hull. | ||
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| + | It seems the [[http://www.pjrc.com/teensy/|"Teensy"]] may be the best board for the jobs. The board retains a USB connector, so will be easy to update/troubleshoot. | ||
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| + | Display Unit: the main unit should have two or three RS232 NMEA0183 inputs. First function button should scroll through those inputs, a long hold should change the number of inputs on the display (i.e. one input, two inputs side by side, two inputs vertical, three inputs, etc.). Ability to set input type (depth, speed, GPS location, GPS Speed, others?). | ||
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| + | Speed sender: leads to the reed switch in the sender are the simplest to extend, so a teensy should be enclosed along with power toggle, and calibration momentary switches. Output of the teensy should be NMEA0183 serial over RS232. | ||
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| + | Depth unit: should be an "intelliducer" type, which outputs NMEA0183 sentences. | ||
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| + | Possible displays: | ||
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| + | * Some of the graphic displays do not have fonts, making them much more complicated. | ||
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| + | [[http://www.pjrc.com/tech/8051/board5/lcd_128x64.html|Graphic & Non-serial]] | ||
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| + | [[http://store.seetron.com/bpp420vy-4x20-serial-lcdinverse-modeyellow-led-bac420420.html|Light on dark 4-line Serial with Bell (expensive at $60)]] | ||
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| + | [[http://www.sparkfun.com/products/9560|Large Graphic, Serial, E-ink type operation (expensive at $80)]] | ||
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| + | [[http://store.seetron.com/serial-oleds.html|OLED two-line with Large Fonts (also expensive at $50)]] | ||
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| + | Someone else's Arduino based speed log: [[http://www.holdentechnology.com/component/content/article/36-sailing-projects/58-speedo]] | ||
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| + | Older thoughts: | ||
| * Planned platform is Arduino NANO with Serial LCD. | * Planned platform is Arduino NANO with Serial LCD. | ||
rini/speed_log_notes.txt · Last modified: 2011/04/11 09:20 by ben
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